Slight pain in lower left back.. kidney pain?

Its a slight pain and feels like its contracting or has a tight feeling to it tight (not when I touch it, but when it hurts). Its been hurting for a few days now. Its my lower left back about halfway down. Anyone experienced this? Is this pain in the left kidney? Drink water everyday (but not 8 glasses).. any... show more Its a slight pain and feels like its contracting or has a tight feeling to it tight (not when I touch it, but when it hurts). Its been hurting for a few days now. Its my lower left back about halfway down. Anyone experienced this? Is this pain in the left kidney? Drink water everyday (but not 8 glasses).. any insight on what it might be?
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